html {
    height: 100%;
}
body{
    background: url(./image/QQ20220520105417.jpg) no-repeat;
    background-size: 100% 100%;
    height: 100%;
    overflow-y:hidden;
}
#formPanel {
    margin-left: 350px;
    margin-top: 150px;
}
tr {
    display: block;
    margin-bottom: 20px;
}